Shal, here are the Return paths for the 2 emails I mention which had been delayed 23 minutes. I know in the scheme of things that isn't very long and is by no means the longest delay, but I found these 2 quickly... and when I mostly receive replies instantly, these are anomalies .
I hope this is helpful. If there is something else you need, just ask... if it s a bit technical, you may need to explain how to do it... lol..
many thanks
Win
First email...
Delivered-To: <del13piero@[ISP]>
Received: from [ISP] ([10.2.56.2])
??? by [ISP] with LMTP id 51K9C050Ulv+UgAA8CYk5A
??? for <del13piero@[ISP]>; Sat, 21 Jul 2018 00:56:02 +0000
Received: from [ISP] ([10.2.56.2])
??? by [ISP] with LMTP id +EGLNmiCUlvJOwAAk2BOMQ
??? ; Sat, 21 Jul 2018 00:56:02 +0000
Received: from [ISP]
??? by [ISP] (Postfix) with ESMTP id 6D1CB1A0002
??? for <del13piero@
[ISP]>; Sat, 21 Jul 2018 00:56:02 +0000 (UTC)
........................
Second email
Delivered-To: <del13piero@[ISP]>
Received: from [ISP] ([10.2.56.7])
??? by [ISP] with LMTP id kwjdNzZiVVu/BwAA8CYk5A
??? for <del13piero@[ISP]>; Mon, 23 Jul 2018 05:08:20 +0000
Received: from [ISP] ([10.2.56.7])
??? by [ISP] with LMTP id i6WbJ/lTVVvuMwAAk2BOMQ
??? ; Mon, 23 Jul 2018 05:08:20 +0000
Received: from[ISP]by [ISP] (Postfix) with ESMTP id 9F5FC1E0018
??? for <del13piero@[ISP]>; Mon, 23 Jul 2018 05:08:20 +0000 (UTC)
[ISP domain redacted by moderator for privacy]
